Problems

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Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
0-1 Sequences 5958 882 15% 0.01 1155 590 51% 6.6
10 Kinds of People 10526 2224 21% 0.01 1849 1257 68% 5.2
2048 5992 2844 47% 0.00 2726 2326 85% 2.5
3D Printed Statues 5921 2765 47% 0.00 2626 2352 90% 2.1
3D Printer 502 107 21% 0.00 189 85 45% 8.0
3-Sided Dice 1903 169 9% 0.00 308 115 37% 8.6
4 thought 5957 2010 34% 0.00 2001 1666 83% 3.1
A1 Paper 3889 1157 30% 0.00 1132 891 79% 3.8
Aaah! 20570 9699 47% 0.00 8715 8102 93% 1.6
Abandoned Animal 1239 244 20% 0.03 296 211 71% 5.2
ABC 8263 3806 46% 0.00 3629 3306 91% 1.6
Above Average 4787 1999 42% 0.00 1999 1789 89% 2.0
A+B Problem 5804 598 10% 0.03 832 285 34% 8.1
A Brief Gerrymander 173 37 21% 0.15 37 22 59% 8.2
Abstract Art 224 62 28% 0.00 61 45 74% 6.8
Absurdistan Roads II 499 180 36% 0.00 175 119 68% 6.8
Absurdistan Roads III 1259 341 27% 0.02 327 247 76% 5.6
Access Points 207 90 43% 0.01 76 59 78% 5.9
A Classy Problem 7165 1854 26% 0.01 1587 1224 77% 4.5
ACM Contest Scoring 5091 3208 63% 0.00 2823 2667 94% 1.6
Adding Words 7408 1713 23% 0.00 1707 1295 76% 4.4
A Different List Game 5648 388 7% 0.00 696 138 20% 9.1
A Different Problem 21987 8463 38% 0.00 7838 6796 87% 2.1
Adjoin the Networks 1441 387 27% 0.00 339 264 78% 5.7
Administrative Difficulties 815 194 24% 0.03 217 142 65% 6.6
Advanced Causal Measurements 49 12 24% 0.10 15 12 80% 6.7
Adventure Begins 169 54 32% 0.06 62 46 74% 4.3
Adventures in Moving -- Part IV 749 231 31% 0.00 206 180 87% 4.2
A Favourable Ending 1262 325 26% 0.00 301 222 74% 4.7
A Feast For Cats 1653 561 34% 0.00 377 313 83% 4.5
Air Conditioned Minions 3274 932 28% 0.00 998 751 75% 3.6
Airline Hub 1546 276 18% 0.01 310 170 55% 7.0
Airport Coffee 711 153 22% 0.09 148 111 75% 6.6
Airport Construction 2822 378 13% 0.02 306 161 53% 7.4
Airport Logistics 48 11 23% 0.00 17 11 65% 7.6
Airports 295 90 31% 0.11 86 65 76% 6.2
Akcija 5001 2192 44% 0.00 1958 1731 88% 2.0
Aladin 733 68 9% 0.10 113 21 19% 9.0
Alchemy 95 15 16% 0.03 27 15 56% 8.0
Alea iacta est 29 11 38% 0.34 14 11 79% 6.9
Alice in the Digital World 2130 591 28% 0.01 592 463 78% 4.1
Alien Codebreaking 54 6 11% 3.23 16 4 25% 8.8
Alien Numbers 1766 909 51% 0.00 882 801 91% 2.0
A List Game 6136 1835 30% 0.00 1764 1482 84% 2.9
All about that base 2488 978 39% 0.00 943 790 84% 3.1
All Different Directions 913 396 43% 0.00 363 315 87% 2.7
Allergy Test 341 108 32% 0.00 110 58 53% 7.9
All Friends 785 152 19% 0.00 138 71 51% 8.5
All Just A Dream 1549 362 23% 0.05 244 172 70% 6.6
All Pairs Shortest Path 6887 1222 18% 0.02 823 568 69% 6.0
Almost Perfect 5207 1217 23% 0.00 1292 1019 79% 3.4
Almost Union-Find 5189 912 18% 0.02 810 458 57% 6.8
Alphabet 956 471 49% 0.00 479 404 84% 3.1
Alphabet Spam 5557 3581 64% 0.00 2802 2698 96% 1.4
Alternative Bracket Notation 193 81 42% 0.00 85 71 84% 4.9
Altruistic Amphibians 318 75 24% 0.24 77 54 70% 5.1
Amalgamated Artichokes 3286 1485 45% 0.01 1331 1159 87% 2.7
Amanda Lounges 1244 343 28% 0.03 313 245 78% 5.5
A Mazing! 1679 401 24% 0.09 189 141 75% 5.1
Amazing Adventures 149 39 26% 0.03 46 29 63% 7.0
Amazing Race 259 68 26% 0.39 76 55 72% 6.6
Ambiguous Result 204 48 24% 0.03 72 46 64% 7.8
Amsterdam Distance 982 406 41% 0.00 455 368 81% 2.8
A Multiplication Game 467 138 30% 0.00 158 119 75% 4.3
Anagram Counting 2680 1035 39% 0.00 982 816 83% 3.1
Andrew the Ant 220 59 27% 0.06 74 55 74% 5.4
A New Alphabet 8577 3903 46% 0.00 3649 3382 93% 1.7
An I for an Eye 247 67 27% 0.00 77 57 74% 5.4
Animal Classification 1372 295 22% 0.03 276 178 64% 6.6
An Industrial Spy 1307 676 52% 0.02 529 452 85% 3.2
Another Brick in the Wall 2294 1096 48% 0.00 1063 968 91% 1.9
Another Candies 6232 1654 27% 0.00 1751 1425 81% 3.2
Another Dice Game 83 60 72% 0.00 53 49 92% 3.4
Another Query on Array Problem 1149 150 13% 0.05 256 106 41% 7.8
Antenna Placement 28 17 61% 0.00 8 7 88% 6.2
Anthony and Cora 663 172 26% 0.00 209 143 68% 5.5
Anthony and Diablo 1779 629 35% 0.00 691 596 86% 2.4
Antiarithmetic? 1008 183 18% 0.01 245 133 54% 7.4
Ants 2685 1215 45% 0.00 939 834 89% 2.4
Apaxiaaaaaaaaaaaans! 9232 5614 61% 0.00 5097 4876 96% 1.4
Apostrophe Catastrophe 61 15 25% 0.00 14 9 64% 6.5
Appalling Architecture 168 54 32% 0.00 61 52 85% 4.8
Apparatus 638 162 25% 0.01 124 95 77% 5.1
Apple Market 445 89 20% 0.07 104 55 53% 7.7
Apples, Cherries, and Mangos 364 114 31% 0.02 107 82 77% 5.6
A Prize No One Can Win 540 236 44% 0.00 198 174 88% 2.5
Aquarium Tank 438 119 27% 0.00 113 88 78% 5.4
Aqueduct Construction 143 51 36% 0.01 42 36 86% 6.1
A Question of Ingestion 1093 266 24% 0.00 246 185 75% 5.7
Arable Area 233 54 23% 0.04 56 34 61% 8.1
Arachnophobia 245 74 30% 0.14 69 56 81% 4.9
A Random Problem 127 25 20% 0.00 31 20 65% 8.0
A Rational Sequence 1332 445 33% 0.00 479 346 72% 5.0
A Rational Sequence 2 1705 1258 74% 0.00 1110 1066 96% 1.5
A Rational Sequence (Take 3) 659 561 85% 0.00 435 425 98% 1.7
Arbitrage? 1742 355 20% 0.02 261 211 81% 3.6
Arcade! 1122 202 18% 0.01 195 138 71% 6.3
Arctic Network 1285 449 35% 0.00 391 313 80% 4.3
A Real Challenge 6102 2948 48% 0.00 2841 2664 94% 1.6
Area of Effect 153 10 7% 1.93 22 8 36% 8.5